Results 1 to 10 of about 453,245 (300)

Zwitterionic Pathway in the Diels–Alder Reaction: Solvent and Substituent Effects from ωB97XD/6-311G(d) Calculations [PDF]

Molecules
We investigated the Diels-Alder cycloaddition of methylcyclopentadiene with conjugated nitroalkenes and examined the influence of solvent polarity and substituent effects on the reaction mechanism.
Agnieszka Łapczuk
doaj   +2 more sources

HS 0943+1404 : a true intermediate polar [PDF]

Astronomy & Astrophysics, 2005
We have identified a new intermediate polar, HS 0943+1404, as part of our ongoing search for cataclysmic variables in the Hamburg Quasar Survey. The orbital and white dwarf spin periods determined from time-resolved photometry and spectroscopy are P orb
A. Aungwerojwit, Andronov, Araujo-Betancor, Araujo-Betancor, B. T. Gänsicke, Barrett, Bertin, Buckley, Buckley, Buckley, D. Engels, D. Nogami, Gänsicke, Gänsicke, Gänsicke, H. Lehto, H.-J. Hagen, Hagen, Hellier, Horne, Howell, Jiang, King, King, King, Kolb, Kolb, Lipkin, M. A. P. Torres, Norton, Norton, P. Rodríguez-Gil, Podsiadlowski, Reimers, Reimers, Rodríguez-Gil, Rodríguez-Gil, S. Araujo-Betancor, S. Littlefair, Scargle, Schenker, Schneider, Schwarzenberg-Czerny, Thorstensen, Vogt, Warner, Warner   +46 more
core   +5 more sources

MHD Modeling of Mass Transfer Processes in Close Binary Stars

Galaxies, 2022
A three-dimensional numerical model has been developed to study the flow structure in close binary systems with a magnetic field. The model uses a system of equations of modified magnetic hydrodynamics, which allows describing all the main dynamic ...
Andrey Zhilkin, Andrey Sobolev, Dmitry Bisikalo   +2 more
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Long-Term Variation of the Spin Period of a Magnetic Cataclysmic Variable, MU Camelopardalis [PDF]

Journal of Astronomy and Space Sciences, 2011
Results of an analysis of 11 nights of R-filter CCD photometry data of an intermediate polar MU Camelopardalis (MU Cam) obtained at the Korean 1.0 m telescope at Mt. Lemmon are reported. After checking the spin period with our data, Pspin =0.d01373801(59)
Ami Yun, Yonggi Kim, Chul-Sung Choi
doaj   +1 more source

Enhanced crystalline quality of non-polar a-plane AlGaN epitaxial film grown with Al-composition-graded AlGaN intermediate layer

Materials Research Express, 2021
The non-polar a -AlGaN epitaxial film was successfully grown on the semi-polar r- sapphire substrate by metal-organic chemical vapor deposition technique.
Abbas Nasir, Xiong Zhang, Liang Lu, Jin Zhang, Jiadong Lyu, Yiping Cui   +5 more
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Stereoselective Copolymerization of Olefin with Polar Monomers to Access Stereoregular Functionalized Polyolefins

Organic Materials, 2022
Introducing polar functionalities to polyolefins such as polyethylene and polypropylene is highly desirable for improving physical properties of the otherwise non-polar material.
Hongliang Mu, Zhongbao Jian
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Two-Color VR CCD Photometry of the Intermediate Polar 1RXS J062518.2+733433 [PDF]

Journal of Astronomy and Space Sciences, 2005
Results of 7 nights of CCD VR photometry of the intermediate polar 1RXS J062518.2 +733433 obtained at the Korean 1.8m telescope are reported. The corrected ephemeris for the orbital minimum is BJD (Orb.min) = 2453023.6159 (42)+0.1966431 (33) (E- 1735 ...
Yonggi Kim, Ivan L. Andronov, Sung Su Park, Lidia L. Chinarova, Alexey V. Baklanov, Young-Beom Jeon   +5 more
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Isolation and Purification of a Hydrophobic Non-Ribosomal Peptide from an Escherichia coli Fermentation Broth

Separations, 2021
Non-ribosomal peptide synthases (NRPSs) generate versatile bioactive peptides by incorporating non-proteinogenic amino acids and catalyzing diverse modifications.
Arne Michael Oestreich, Sebastian Reinhardt, Doreen Gerlach, Rong Fan, Peter Czermak   +4 more
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Risk Analysis of Autonomous Underwater Vehicle Operation in a Polar Environment Based on Fuzzy Fault Tree Analysis

Journal of Marine Science and Engineering, 2023
Autonomous underwater vehicles have long been used in marine explorations, and their application in recent polar expeditions is particularly noteworthy.
Hyonjeong Noh, Kwangu Kang, Jin-Yeong Park   +2 more
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Morphological, histochemical and immunohistochemical studies of polar fox kidney

Folia Histochemica et Cytobiologica, 2012
The aim of the present study was to evaluate the morphology and intermediate filaments cytokeratin, desmin and vimentin expression in the kidneys of the polar fox (<em>Alopex lagopus</em>).
Wiesław Skrzypczak, Katarzyna Piotrowska, Sylwia Słuczanowska-Głąbowska, Marcin Wylot, Roman Szymeczko, Maria Laszczyńska, Małgorzata Ożgo   +6 more
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